Merge pull request httprunner#634 from HttpRunner/fix_yaml_warning

fix: yaml FullLoader AttributeError when PyYAML version < 5.1

feat: 'export' is used to replace 'output' in testcase config

Merge pull request httprunner#630 from HttpRunner/bugfix_testcase_for…

…mat_v2

2.2.1

Merge pull request httprunner#626 from HttpRunner/bugfix

Bugfix

update docs

docs: update bug report

Merge pull request httprunner#557 from HttpRunner/upload_files

2.1.1 Upload files

update changelog

Merge pull request httprunner#542 from HttpRunner/bugfix

2.0.6

Merge pull request httprunner#532 from HttpRunner/bugfix

fix xss in response json